Porch extensions in Hatfield
We design and build porch extensions for houses in Hatfield, with a written price once the survey and design are done and one point of contact throughout.
- Guide price in HatfieldFrom £4,200 inc VAT
- PlanningUsually permitted development under 3 m²
- Build time2–4 weeks on site
- Postcode districtsAL7, AL8, AL9, AL10
What should I budget for a porch extension in Hatfield?
Prices below are for Hatfield, using the East of England factor of ×1.06. They are guide ranges including VAT for the build only, not a quote.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Small brick or glazed porch, up to 3 m² | £4,200 – £6,900 |
| Standard | Brick porch with tiled roof and composite door | £6,350 – £10,100 |
| Premium | Larger porch with WC or oak frame and premium glazing | £9,500 – £15,900 |
Try the guide-price tool to see a range for your own size and finish.
Planning rules that apply in Hatfield
In England a porch is usually permitted development if its ground floor area is no more than 3 m² measured externally, no part is over 3 m high, and no part is within 2 m of a boundary next to a road.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Building over or within 3 m of a public sewer needs the water company's consent, usually through a build-over agreement, before the foundations go in.
Applications are decided by the local planning authority (your district, borough or unitary council).
Local to Hatfield
Site visits are available across Hatfield (AL7, AL8, AL9, AL10). Neighbouring towns we cover include Welwyn Garden City (3 miles), St Albans (5 miles), Potters Bar (5 miles), Hertford (7 miles).
Just over the Greater London border, Barnet is about 8 miles away. The East of England mixes market-town terraces, inter-war semis and modern estates. Clay soils are common in parts of the region, which can affect foundation design.
What is included
- Foundations and drainage for rainwater
- Front door, glazing and electrics
- Planning check against the porch limits
- Design to suit the house style
From first visit to completion
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Porch extension questions answered
Do you cover all of Hatfield?
Yes. We cover Hatfield and the surrounding parts of Hertfordshire. Site visits are free and there is no obligation.
Who do I contract with for a porch extension in Hatfield?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Do I need building regulations approval in Hatfield?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
How much does a porch cost?
Our guide range is about £4,200 to £15,900 including VAT, depending on size, materials and whether it includes a WC.
Do I need planning permission for a porch?
In England a porch is usually permitted development if its ground floor area is no more than 3 m² (measured externally), no part is higher than 3 m, and no part is within 2 m of a boundary next to a highway. Other nations have similar but separate rules.
Book a free site visit in Hatfield
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.